{
 "schema_version": 1,
 "generated": "2026-10-20",
 "id": "continuum-ai-corp-orcareplay--fork-run-to-compare-models-at-one-step",
 "repo": "Continuum-AI-Corp/OrcaReplay",
 "repo_url": "https://github.com/Continuum-AI-Corp/OrcaReplay",
 "repo_slug": "continuum-ai-corp-orcareplay",
 "title": "Fork a run at one step and compare models",
 "page_title": "How to fork a run at one step and compare models with Orca Replay",
 "summary": "Keep the first steps of a recorded run fixed, switch to another model from a chosen checkpoint, and compare results.",
 "who": "A team lead or developer choosing which model to use for a coding task who wants a fair comparison.",
 "problem": "Comparing models on a task usually changes the starting context too, so results do not show the effect of the model alone.",
 "outcome": "Replays that match the recording up to checkpoint 4, then continue on a different model, and a comparison table where the model is the only variable.",
 "steps": [
  "Run `npm i -g orcareplay` and record a run with `orca record claude`.",
  "Run `orca replay last --from 4 --model claude-haiku-4-5 --ui` to continue the same conversation on a different model from step 4.",
  "Run `orca compare last --from 4 --models a,b` with the model names you want to test in place of a and b.",
  "Run `orca show last` after each fork to check which turns came from the trace and which came from the network."
 ],
 "agent_prompt": "Use the OrcaReplay repo (Continuum-AI-Corp/OrcaReplay) to fork the recorded run `last` at checkpoint 4 onto the models <model-a> and <model-b> using `orca compare last --from 4 --models <model-a>,<model-b>`. Report one comparison table with the outcome for each model. Verify that turns before checkpoint 4 are identical across both forks.",
 "agents": [
  "claude-code",
  "codex"
 ],
 "difficulty": "Intermediate",
 "time": "60 minutes",
 "basis": "readme",
 "caveat": "Forked turns after the cursor call live model APIs, so they need keys and network access and they spend tokens.",
 "category": "Software and DevOps",
 "tags": [
  "Software and DevOps"
 ],
 "lang": "typescript",
 "requirements": [
  "Node.js and npm, to install the orcareplay package",
  "A coding agent installed locally, such as Claude Code or Codex CLI, to record a run",
  "A model API key and network access for recording and for live forked turns",
  "A terminal with permission to install a global npm package"
 ],
 "risk": "dual-use",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": false,
 "score": 0.9,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/continuum-ai-corp-orcareplay/fork-run-to-compare-models-at-one-step/",
 "md": "https://dedupedai.com/use-cases/continuum-ai-corp-orcareplay/fork-run-to-compare-models-at-one-step/index.md",
 "disclaimer": "Deduped lists open-source repositories that belong to other people. We do not own, maintain, audit, or vouch for any of them, and a repo appearing here is not an endorsement or a safety check. The use cases, steps, and prompts are written by AI and may be incomplete, outdated, or just wrong. Where a use case is marked \"Seen in the wild\", we link to public posts where someone described something similar, but we have not verified those posts and the use case itself is still our AI's own write-up. Use all of this at your own risk. Only run code, commands, or agents on systems and accounts you are authorized to use, and read the code and every command before you run it, especially anything that touches credentials, files, or the network. Nothing here is professional, security, legal, or financial advice. All trademarks and project names belong to their respective owners, and their use here does not imply affiliation. Content is provided as is, without warranties of any kind. Found a mistake, a safety problem, or something you want removed? Email hello@dedupedai.com and we will look at it promptly.",
 "api": "https://dedupedai.com/api/v1/usecases/continuum-ai-corp-orcareplay--fork-run-to-compare-models-at-one-step.json",
 "api_version": "v1"
}